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<div class="title">tsi2c.cpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - &lt;http://www.fabgl.com&gt;</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">  Copyright (c) 2019-2020 Fabrizio Di Vittorio.</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">  All rights reserved.</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">  This file is part of FabGL Library.</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">  FabGL is free software: you can redistribute it and/or modify</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">  it under the terms of the GNU General Public License as published by</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">  the Free Software Foundation, either version 3 of the License, or</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">  (at your option) any later version.</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">  FabGL is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">  but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">  GNU General Public License for more details.</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">  You should have received a copy of the GNU General Public License</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">  along with FabGL.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#ifdef ARDUINO</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;freertos/FreeRTOS.h&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &quot;freertos/task.h&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="tsi2c_8h.html">tsi2c.h</a>&quot;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacefabgl.html">fabgl</a> {</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#define I2C_COMMTASK_STACK    1000</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#define I2C_COMMTASK_PRIORITY 5</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#define I2C_DEFAULT_FREQUENCY 100000</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#define EVTGROUP_READY (1 &lt;&lt; 0)</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor">#define EVTGROUP_WRITE (1 &lt;&lt; 1)</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#define EVTGROUP_READ  (1 &lt;&lt; 2)</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#define EVTGROUP_DONE  (1 &lt;&lt; 3)</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classfabgl_1_1_i2_c_a93f66e29e22bca7a9f5d8e3d5af2d6a2.html#a93f66e29e22bca7a9f5d8e3d5af2d6a2">   47</a></span>&#160;<a class="code" href="classfabgl_1_1_i2_c_a93f66e29e22bca7a9f5d8e3d5af2d6a2.html#a93f66e29e22bca7a9f5d8e3d5af2d6a2">I2C::I2C</a>(<span class="keywordtype">int</span> bus)</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  : m_i2c(nullptr),</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    m_bus(bus),</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    m_commTaskHandle(nullptr),</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    m_eventGroup(nullptr)</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;{</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;}</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;I2C::~I2C()</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;{</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  end();</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;}</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classfabgl_1_1_i2_c_abdd72a91fee181ca1b9eb05120e60a28.html#abdd72a91fee181ca1b9eb05120e60a28">   62</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="classfabgl_1_1_i2_c_abdd72a91fee181ca1b9eb05120e60a28.html#abdd72a91fee181ca1b9eb05120e60a28">I2C::begin</a>(gpio_num_t SDAGPIO, gpio_num_t SCLGPIO)</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;{</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;  m_SDAGPIO   = SDAGPIO;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;  m_SCLGPIO   = SCLGPIO;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;  m_eventGroup = xEventGroupCreate();</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  <span class="comment">// why a task? Because esp32 i2c communications must be done on the same core</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;  <span class="comment">// must be pinned to one core (0 in this case)</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  xTaskCreatePinnedToCore(&amp;commTaskFunc, <span class="stringliteral">&quot;&quot;</span>, I2C_COMMTASK_STACK, <span class="keyword">this</span>, I2C_COMMTASK_PRIORITY, &amp;m_commTaskHandle, 0);</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;  <span class="comment">// wait for commTaskFunc() ends initialization</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  xEventGroupWaitBits(m_eventGroup, EVTGROUP_DONE, <span class="keyword">true</span>, <span class="keyword">false</span>, portMAX_DELAY);</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <span class="comment">// ready to accept jobs</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  xEventGroupSetBits(m_eventGroup, EVTGROUP_READY);</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;  <span class="keywordflow">return</span> m_i2c != <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;}</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="keywordtype">void</span> I2C::end()</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;{</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;  <span class="keywordflow">if</span> (m_commTaskHandle)</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    vTaskDelete(m_commTaskHandle);</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  m_commTaskHandle = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;  <span class="keywordflow">if</span> (m_i2c)</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    i2cRelease(m_i2c);</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  m_i2c = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  <span class="keywordflow">if</span> (m_eventGroup)</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    vEventGroupDelete(m_eventGroup);</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;  m_eventGroup = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;}</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="classfabgl_1_1_i2_c_a5683609bed861f2c075c25d935029e3f.html#a5683609bed861f2c075c25d935029e3f">   99</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="classfabgl_1_1_i2_c_a5683609bed861f2c075c25d935029e3f.html#a5683609bed861f2c075c25d935029e3f">I2C::write</a>(<span class="keywordtype">int</span> address, uint8_t * buffer, <span class="keywordtype">int</span> size, <span class="keywordtype">int</span> frequency, <span class="keywordtype">int</span> timeOutMS)</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;{</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;  <span class="comment">// wait for I2C to be ready</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  xEventGroupWaitBits(m_eventGroup, EVTGROUP_READY, <span class="keyword">true</span>, <span class="keyword">false</span>, portMAX_DELAY);</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  m_jobInfo.frequency = frequency;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;  m_jobInfo.address   = address;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  m_jobInfo.buffer    = buffer;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  m_jobInfo.size      = size;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;  m_jobInfo.timeout   = timeOutMS;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <span class="comment">// unlock comm task for writing</span></div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  <span class="comment">// wait for comm task to finish job</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  xEventGroupSync(m_eventGroup, EVTGROUP_WRITE, EVTGROUP_DONE, portMAX_DELAY);</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;  <span class="keywordtype">bool</span> ret = (m_jobInfo.lastError == I2C_ERROR_OK);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;  <span class="comment">// makes I2C ready for new requests</span></div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;  xEventGroupSetBits(m_eventGroup, EVTGROUP_READY);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;  <span class="keywordflow">return</span> ret;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;}</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classfabgl_1_1_i2_c_aee6d332047f3429253a95c94c59cccd9.html#aee6d332047f3429253a95c94c59cccd9">  124</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="classfabgl_1_1_i2_c_aee6d332047f3429253a95c94c59cccd9.html#aee6d332047f3429253a95c94c59cccd9">I2C::read</a>(<span class="keywordtype">int</span> address, uint8_t * buffer, <span class="keywordtype">int</span> size, <span class="keywordtype">int</span> frequency, <span class="keywordtype">int</span> timeOutMS)</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;{</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  <span class="comment">// wait for I2C to be ready</span></div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;  xEventGroupWaitBits(m_eventGroup, EVTGROUP_READY, <span class="keyword">true</span>, <span class="keyword">false</span>, portMAX_DELAY);</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;  m_jobInfo.frequency = frequency;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  m_jobInfo.address   = address;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  m_jobInfo.buffer    = buffer;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  m_jobInfo.size      = size;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  m_jobInfo.timeout   = timeOutMS;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;  <span class="comment">// unlock comm task for reading</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;  <span class="comment">// wait for comm task to finish job</span></div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;  xEventGroupSync(m_eventGroup, EVTGROUP_READ, EVTGROUP_DONE, portMAX_DELAY);</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;  <span class="keywordtype">int</span> ret = m_jobInfo.readCount;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  <span class="comment">// makes I2C ready for new requests</span></div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  xEventGroupSetBits(m_eventGroup, EVTGROUP_READY);</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="keywordflow">return</span> ret;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;}</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="keywordtype">void</span> I2C::commTaskFunc(<span class="keywordtype">void</span> * pvParameters)</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;{</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;  <a class="code" href="classfabgl_1_1_i2_c.html">I2C</a> * ths = (<a class="code" href="classfabgl_1_1_i2_c.html">I2C</a>*) pvParameters;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  i2c_t * i2c = i2cInit(ths-&gt;m_bus, ths-&gt;m_SDAGPIO, ths-&gt;m_SCLGPIO, I2C_DEFAULT_FREQUENCY);</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keywordflow">if</span> (!i2c) {</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    ESP_LOGE(<span class="stringliteral">&quot;unable to init I2C&quot;</span>);</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    abort();</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  }</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  i2cFlush(i2c);</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  ths-&gt;m_i2c = i2c;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;  <span class="comment">// get initial default frequency</span></div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;  <span class="keywordtype">int</span> freq = i2cGetFrequency(i2c);</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;  I2CJobInfo * job = &amp;ths-&gt;m_jobInfo;</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;  <span class="comment">// main send/receive loop</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;  <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    <span class="comment">// unlock waiting task</span></div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    xEventGroupSetBits(ths-&gt;m_eventGroup, EVTGROUP_DONE);</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="comment">// wait for another job</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    <span class="keyword">auto</span> bits = xEventGroupWaitBits(ths-&gt;m_eventGroup, EVTGROUP_WRITE | EVTGROUP_READ, <span class="keyword">true</span>, <span class="keyword">false</span>, portMAX_DELAY);</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="comment">// setup frequency if necessary</span></div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keywordflow">if</span> (freq != job-&gt;frequency) {</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;      freq = job-&gt;frequency;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;      i2cSetFrequency(i2c, freq);</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    }</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <span class="keywordflow">if</span> (bits &amp; EVTGROUP_WRITE)</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;      job-&gt;lastError = i2cWrite(i2c, job-&gt;address, job-&gt;buffer, job-&gt;size, <span class="keyword">true</span>, job-&gt;timeout);</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (bits &amp; EVTGROUP_READ)</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;      job-&gt;lastError = i2cRead(i2c, job-&gt;address, job-&gt;buffer, job-&gt;size, <span class="keyword">true</span>, job-&gt;timeout, &amp;job-&gt;readCount);</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;  }</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;}</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;} <span class="comment">// end of namespace</span></div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="preprocessor">#endif  // #ifdef ARDUINO</span></div><div class="ttc" id="classfabgl_1_1_i2_c_abdd72a91fee181ca1b9eb05120e60a28_html_abdd72a91fee181ca1b9eb05120e60a28"><div class="ttname"><a href="classfabgl_1_1_i2_c_abdd72a91fee181ca1b9eb05120e60a28.html#abdd72a91fee181ca1b9eb05120e60a28">fabgl::I2C::begin</a></div><div class="ttdeci">bool begin(gpio_num_t SDAGPIO, gpio_num_t SCLGPIO)</div><div class="ttdoc">Initializes I2C instance associating GPIOs to I2C signals. </div><div class="ttdef"><b>Definition:</b> <a href="tsi2c_8cpp_source.html#l00062">tsi2c.cpp:62</a></div></div>
<div class="ttc" id="classfabgl_1_1_i2_c_html"><div class="ttname"><a href="classfabgl_1_1_i2_c.html">fabgl::I2C</a></div><div class="ttdoc">I2C class allows multiple tasks to communicate with I2C devices, serializing read/write jobs...</div><div class="ttdef"><b>Definition:</b> <a href="tsi2c_8h_source.html#l00076">tsi2c.h:76</a></div></div>
<div class="ttc" id="classfabgl_1_1_i2_c_a93f66e29e22bca7a9f5d8e3d5af2d6a2_html_a93f66e29e22bca7a9f5d8e3d5af2d6a2"><div class="ttname"><a href="classfabgl_1_1_i2_c_a93f66e29e22bca7a9f5d8e3d5af2d6a2.html#a93f66e29e22bca7a9f5d8e3d5af2d6a2">fabgl::I2C::I2C</a></div><div class="ttdeci">I2C(int bus=0)</div><div class="ttdoc">I2C class constructor. </div><div class="ttdef"><b>Definition:</b> <a href="tsi2c_8cpp_source.html#l00047">tsi2c.cpp:47</a></div></div>
<div class="ttc" id="classfabgl_1_1_i2_c_aee6d332047f3429253a95c94c59cccd9_html_aee6d332047f3429253a95c94c59cccd9"><div class="ttname"><a href="classfabgl_1_1_i2_c_aee6d332047f3429253a95c94c59cccd9.html#aee6d332047f3429253a95c94c59cccd9">fabgl::I2C::read</a></div><div class="ttdeci">int read(int address, uint8_t *buffer, int size, int frequency=100000, int timeOutMS=50)</div><div class="ttdoc">Receives a buffer from I2C bus. </div><div class="ttdef"><b>Definition:</b> <a href="tsi2c_8cpp_source.html#l00124">tsi2c.cpp:124</a></div></div>
<div class="ttc" id="namespacefabgl_html"><div class="ttname"><a href="namespacefabgl.html">fabgl</a></div><div class="ttdef"><b>Definition:</b> <a href="canvas_8cpp_source.html#l00031">canvas.cpp:31</a></div></div>
<div class="ttc" id="tsi2c_8h_html"><div class="ttname"><a href="tsi2c_8h.html">tsi2c.h</a></div><div class="ttdoc">This file contains fabgl::I2C definition. </div></div>
<div class="ttc" id="classfabgl_1_1_i2_c_a5683609bed861f2c075c25d935029e3f_html_a5683609bed861f2c075c25d935029e3f"><div class="ttname"><a href="classfabgl_1_1_i2_c_a5683609bed861f2c075c25d935029e3f.html#a5683609bed861f2c075c25d935029e3f">fabgl::I2C::write</a></div><div class="ttdeci">bool write(int address, uint8_t *buffer, int size, int frequency=100000, int timeOutMS=50)</div><div class="ttdoc">Sends a buffer to I2C bus. </div><div class="ttdef"><b>Definition:</b> <a href="tsi2c_8cpp_source.html#l00099">tsi2c.cpp:99</a></div></div>
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